认知语言学认为隐喻不仅是一种语言现象,更是人类的思维方式和认知的有力工具。对奥巴马校园演说中的概念隐喻进行研究,其潜在意图在于对概念隐喻选择的内在原因进行解读,利于人们进一步了解概念隐喻的作用和实质。一、引言在认知语言学中,隐喻被认为是本质上通过一种事物来理解、体验和感知另一种事物的手段。隐喻广泛存在于政治语篇中,具有劝说性和生动性的特点,两千多年来一直受到语言学者的关注,研究隐喻可以从不同的领域和不 Cognitive linguistics holds that metaphor is not only a linguistic phenomenon, but also a powerful tool for human thinking and cognition. The potential intention of researching concept metaphors in Obama’s campus speech is to interpret the underlying causes of the selection of conceptual metaphors and to make people understand the role and essence of conceptual metaphors further. I. INTRODUCTION In cognitive linguistics, metaphor is considered as a means to understand, experience and perceive another kind of thing through one thing. Metaphor is widely used in political discourse, persuasive and vivid features, has been the concern of linguists for more than two thousand years, research metaphor can be from different areas and not